DESC: To kill fleas and all stages of brown dog ticks, American dog ticks, lone star ticks , and deer ticks, apply to dogs and puppies 10 weeks or older as follows: Hold applicator upright and snap applicator tip away from face and body. Place applicator tip through animals hair to the skin level between the shoulder blades. Squeeze applicator, applying entire contents in a single spot to the animals skin. Avoid superficial application to the animals hair.